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B.E.`FERN0W,1. "ELECTRONIAGNETIC CLUTCH.

APPLICATION FILED JUNE 5.19l6.

Patented Dec. 16,1919.

at Milwaukee, inthe county of Milwaukee. and-f State of Wisoonsim h'ave invented new STATES PATENT OFFICE..

nnniranp nrnnnow; am, or Minvvnnxnn, wisconsin, AssIGNon, BY mism: .Assieir- MENTS, To 'rim cu'innnfnamirmz. MFG. co., on MILWAUKEE, wIscoNsnLn Conroy'.iaa'frron or wisconsin;

' To all 'whom it may concern.'

Be it knownthat I, 'BERAnpUE., Fn'nNow, a citizenof'the -United States, residing and useful Improvements 'in ElectromagneticClutcheaof'which the following is a lull; clear concise, and exact description,v reference lieiii had to ,thev accompanying drawing, formiiiga part of Vthis specifica-.

tion. i This invention relates to electromagnetic clutches. and more particularly to .those of they annular type.. I'

Amongy the objects of the' invention 191e. vtannin.101,323.

which the outer4 ends 1o the cores 10 pro- 'Jectandis split in sections coinciding with those o'f the casing 3. The 'electromagnets carried by eachgsection of the casing are adapted tobe connected in series b connection of .adjacent terminals thereo and the shield formed with openings 145 'through -Srdefwfliwrmnt e ratencea'nec. 1e, 191e. pplicatiozu. med .Tune 5,

yelectromagnets ofthe two sections `are adapted to be yseries connected by a conducting `,strip '15 servin .one being PlQvide ieldmemjber. l

4to bridgeftermnals 16 `on eachV section of the4 Current is supplied to the labove described v 4 lector, ring. 17 .which ilanged'upon hub 4 is tojprovide a' clutch of `the ftypefstatedjof the. casin 3 :tory rotation therewith.

whichli'nay be readily s'issemblcd upon a l shaft without displacement Ofy .fhe latterfl A'further object isto facilitate renewal 'or replacementof the various clutch4 parts.4

Otherfobjefcts .will appear as the desgripdifikven gear through the medium of a spring4 l magnets 9 equally spaced.`

tion. roceeds. 1

Re erring. to' the jdrawing, wherein is illustrated an embodiment ofthe inventin,

i'Figure 1 is an edgey'iew, partl in'sectiori,

of a 'clutch constructed in accor ancetheref dis Referring-to ig.`2, the `circuit of the `elecelectromagnetic; element-'from :rf-'split' coltroinagnets .maybe traced as follows, 1from ..the colleetor. riI!g l7-.:by neans of terminals v 18 and. conductor'9 to casing :terminal 20,"v Jthence, through the windings of the electromagnets "mounted within thelet halfof the" casing 3to. terminall, through the "conductiyestrip-l to terminal 116' on the right L halfofthecasingand returning totheri ht above. described.

` V.rin'g terminal 18 by a ,cou'rse similar to t at A split friction Vring 21 having a suitable` face of lining 22 is bolted upon the .engagin etlie chanthe field member lliradiallyoutsi v nel 8 the lining 22 being posit-ionedfor :fric-l tiona contact with the armature .platel 2 .whenrthe .clutch is engaged:-. Thefarmature plate 2.and gear 23 are both The field member comprises an 'annularfSplit diametrically along'a common line,tlie

"..respective sections-thereof being clampedi together by means ofl'bolts 24 and 25. passed- A through.appropriate' lugs -26 and 27'. y' The y casing?) having an extended hub fitta drivin sliaftand said casing including the hub slit diametrieally on line 5 and the Sections thereof are adapted to be secured tof gether'by bolts fpassingthrough suitable lugs 'Z provided thereon. `An annular dhanf iie1.8is,formed near' the' periphery .ofthe casing 3"in which'isjhoused the electromagf netic element" which comprises ai plurality of (in the .present case'ten) separate electro- Each 4of the said electromagnets comprises 'a core 10 fixed within itheV channel 8-,'bv

means of a screw v'bolt-11 extending throng 'the wall of the casing, thircoie 1Q, beingsut'.-

rounded by a winding IZ.

The sui-roundingv space' within the channel 8 is filled with a suitable im regnating compound whil'e the exterior if t ie channel is closed by an `annular coil shield 13. The

flexible diska28 isalsosplit diametrically-4 A but preferably. ona planey at right angles to .thatofthemrmature late 2.

The v28' is attacilieil toplate 2 'near its eripheryby means of. lbolts 29, while'the \l1)gs; 26. on -said plate projects throughsuitopenings 30 in said disk whereby said-L00 lugs and the bolts carried therebyl are renl dered easil .accessible. ASaid disk isfurthcr-4 .more attac ied tothe. gear 23 by meansof the centrally locate'd screw bolts 31, whereby o.. said disk constitutes .a resilient-'support for the armature plates'biasing the same away from the. field-member. f-f.

the casing 3 and closely surrounds the shaft opening therein serves to maintain the gear A spacingwasher 32 which is attached to` '23 and'its attached parts normally spaced an appreciable distance from said casing.

4 'Upon energization of the various elctro` .magnets the armature plate"2 is drawn into Well 'lunderstood 'fis frictional engagement with' the engaging surface 22 of the field member in a manner' B the 'above described action the resilient disk'28 is placed under. teiisioii,'whereby' n cn denergization of the electromagnets` sai disk acts to disengage the armature plate 2 from said friction surface. The magnet cores 10 are of such lengthas clear the plate2 at all times. L From the above description it is 'apparent that the clutch parts may be readily mounted in'any desired position upon or re- .A "permits se aration of the lie l l moved from a fixed shaft Vwithout discon-v necting the latter and without shifting the .assembled clutch axially thereofr'.v Moreover, the construction of the magnetic element in tlc; form of a plurality of separate magnets halves as cscribed while lfacilitating repair or renewal of the various units of said magnetic element without disadju'stment ofuiiattached arts. L

claim as new anddesire to secure What I byLetters Patent vis:

' 1.`4 'An lecromagnetic clutch element, comg calljfsplit'to provide separable sections lfor prising an4 'annularfield member diametriassemblyabouta shaft, each of seid vsections u beingfintegrally formed andv including a hub portion and achanneled Yportion located circumferentiallylthereof, a plurality of electromagnetic windings inclosed within"A said channeled portion, the.latter servin 'as 'a common ma et'ic. frame for the ormer, sai'd sections iaving means for securing the same in assembledrelatioii.

4,2.I An .electrom netic clutch clement,

l cii'prisin'g an annu ar field member diamety'binatioinan annular iiel d.. m'ein`ber comprising ,al centrallyI located liu-b, a peripheral flangeormed integral therewith" and an in- 60 1:'of.',el;eotroinagnetic windings inclosed withinrsaid channeled portion, the' latter. constitutinga cominonmagncticsupport for the former afr'itionringseciired to'said flan e,

.rially split to provide separable sections for assembly about a shaft, each of said sections .being integrally formed and including a hub portion and a channeled portion located circumferentially thereof, a plurality of electi'omagnetic windings inclosed within said channeled' portion, the latter serving as a etic frame for tlieformer, said sections having means for securing the saine ,"iinf'assen'ibled relation comprisin "registering lugs located peripheral y of said portions and of said channeled portions common inagn sets of hub' and olts passing through said` lues.

`3.111 an electromagnetic clutch, in conitermediate channeled portion, ai plurality said lie d member' beinfgfldianietrically sp it d member into 'in a planepassing between said windin i to l provide similar sectionsfor assembly a 'ut a shaft, means forsecuring said sections in assembled. relation. and an amature member adapted for riving engagement with said friction ring.

f4. An electromagnetic clutch'- element i comprising, in combination, an annular field member including a centrally located hub, a peripheral flange formed integral theref a pluralit ofelectrom etic windings inclosed wi in said .channe edportion, the lat ter constituting a common magnetic support or'the former, and a friction ring secured to said flange said field member eingdia lit in a plane passing between ametrically sp ,said windings to provide similar sections for assembl about ashaft, said sections having means ory securing the same tcglether coinprising sets of re 'A ring lugs coated peit. with and an intermediate channeled portion,

ripherall of said ub portions and of' said j ber and said disk being split'along diametrical planes at right an les to each other for permitting assembl t ereof' about a shaft portions and bolts passing throughA and having means or securing the same in assembled relation.

7; An electromagnetic. clutch armature comprising, in combination, an annular magnetic member and 'a resilient annular disk peripherally secured to said member 'foi-J supporting the same, said member and Said disk being diametrically split to permit asseinbly thereofabout asliaft, the sections of -said magnetic member havingl registering pairs of axially extending lu` for securingl the same together and Vsaid isk being proto permit assage of s'ai lugs theret rough for accessi ility of the latter.'

8. .In an electromagnetic clutch, in coinbination acentrally located hub, a peripheral flan e formed integral therewith and an interme iate channeled ortion, a luralit of electr'omagnetic windings inc osed 4within said 4channeled portion, vthelatter constituting a common magneic supportfor the former, a friction ring secured to ,said ange, 'said field vided witlrcorrcspondin ly located=o enings.

an annular field member comprising.

means iorswuripg "sind sections m assemscribed ymy name. 

